/Engine/Plugins/Runtime/Metasound/Source/MetasoundEngine/Public/MetasoundBuilderSubsystem.h
Adds builder to subsystem's registry to make it persistent and easily accessible by multiple systems or Blueprints.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Audio|MetaSound|Builder") void RegisterSourceBuilder ( [FName](API\Runtime\Core\UObject\FName) BuilderName, [UMetaSoundSourceBuilder](API\Plugins\MetasoundEngine\UMetaSoundSourceBuilder) * Builder )